156850091 has 2 divisors, whose sum is σ = 156850092. Its totient is φ = 156850090.

The previous prime is 156850081. The next prime is 156850097. The reversal of 156850091 is 190058651.

It is a strong prime.

It is an emirp because it is prime and its reverse (190058651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 156850091 - 2⁶ = 156850027 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (156850097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78425045 + 78425046.

It is an arithmetic number, because the mean of its divisors is an integer number (78425046).

Almost surely, 2^156850091 is an apocalyptic number.

156850091 is a deficient number, since it is larger than the sum of its proper divisors (1).

156850091 is an equidigital number, since it uses as much as digits as its factorization.

156850091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 156850091 is about 12523.9806371617. The cubic root of 156850091 is about 539.2973153252.

The spelling of 156850091 in words is "one hundred fifty-six million, eight hundred fifty thousand, ninety-one".